Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Collagen type I. (B) Collagen type II. (C) MMP-13. (D) TGF-β3. (E) TGF-β2. The region of yellow arrows indicated the original outline of the implant. Scale bar: 200 μm at 4 weeks and 12 weeks.
